From the author of the acclaimed New York Times bestseller The Art of Racing in the Rain comes an extraordinary tale of grief, devotion, redemption, and timeless mystery.

When Jenna Rosen abandons her comfortable Seattle life to visit Wrangell, Alaska, it's a wrenching return to her past. The hometown of her Native American grandmother, Wrangell is located near the Thunder Bay Resort, where Jenna's young son, Bobby, disappeared two years before. His body was never recovered, and Jenna is determined to lay to rest the aching mystery of his death. But whispers of ancient legends begin to suggest a frightening new possibility about Bobby's fate, and Jenna must sift through the beliefs of her ancestors, the Tlingit, who still tell of powerful, menacing forces at work in the Alaskan wilderness. Armed with nothing but a mother's protective instincts, Jenna's quest for the truth behind her son's disappearance is about to pull her into a terrifying and life-changing abyss.